<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>北极光之夜。</title>
    <style>
        *{
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }
        body{
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: rgb(0, 0, 0);
        }
        h1{
            font-family: 'fangsong';
            font-size: 6em;
            color: transparent;
        }
        span{
           display: table-cell;
           animation: san 3s linear infinite;
        }
        h1 span:nth-child(1){
            animation-delay:0s;
        }
        h1 span:nth-child(2){
            animation-delay:0.1s;
        } 
        h1 span:nth-child(3){
            animation-delay:0.2s;
        }
        h1 span:nth-child(4){
            animation-delay:0.3s;
        }
        h1 span:nth-child(5){
            animation-delay:0.4s;
        }
        h1 span:nth-child(6){
            animation-delay:0.5s;
        }
        h1 span:nth-child(7){
            animation-delay:0.6s;
        }
        h1 span:nth-child(8){
            animation-delay:0.7s;
        }
        h1 span:nth-child(9){
            animation-delay:0.8s;
        }
        h1 span:nth-child(10){
            animation-delay:0.9s;
        }
        @keyframes san{
            0%,100%{
                color: rgb(255, 255, 255);         
                text-shadow: 0 0 5px rgb(1, 231, 247),
                            0 0 15px rgb(1, 231, 247),
                            0 0 25px rgb(1, 231, 247),
                            0 0 50px rgb(1, 231, 247),
                            0 0 80px rgb(1, 231, 247),
                            0 0 120px rgb(1, 231, 247),
                            0 0 160px rgb(1, 231, 247),
                            0 0 200px rgb(1, 231, 247),
                            0 0 300px rgb(1, 231, 247),
                            0 0 400px rgb(1, 231, 247),
                            0 0 500px rgb(1, 231, 247);
            }
            20%,80%{
               color: transparent;
               text-shadow: none;
            }
           
        }
    </style>
</head>
<body>
    <h1>
        <span>佛</span>
        <span>主</span>
        <span>保</span>
        <span>佑</span>
        <span>，</span>
        <span>考</span>
        <span>试</span>
        <span>全</span>
        <span>过</span>
        <span>！</span>
        
    </h1>
</body>
</html>